Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2019-1739

Disclosure Date: March 27, 2019 •
CVE-2019-1739 CVSS v3 Base Score: 7.5
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to a parsing issue on DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Cisco IOS and Cisco IOS-XE Software 3.16.0S
Cisco IOS and Cisco IOS-XE Software 3.16.1S
Cisco IOS and Cisco IOS-XE Software 3.16.0aS
Cisco IOS and Cisco IOS-XE Software 3.16.1aS
Cisco IOS and Cisco IOS-XE Software 3.16.2S
Cisco IOS and Cisco IOS-XE Software 3.16.2aS
Cisco IOS and Cisco IOS-XE Software 3.16.0bS
Cisco IOS and Cisco IOS-XE Software 3.16.0cS
Cisco IOS and Cisco IOS-XE Software 3.16.3S
Cisco IOS and Cisco IOS-XE Software 3.16.2bS
Cisco IOS and Cisco IOS-XE Software 3.16.3aS
Cisco IOS and Cisco IOS-XE Software 3.16.4S
Cisco IOS and Cisco IOS-XE Software 3.16.4aS
Cisco IOS and Cisco IOS-XE Software 3.16.4bS
Cisco IOS and Cisco IOS-XE Software 3.16.4gS
Cisco IOS and Cisco IOS-XE Software 3.16.5S
Cisco IOS and Cisco IOS-XE Software 3.16.4cS
Cisco IOS and Cisco IOS-XE Software 3.16.4dS
Cisco IOS and Cisco IOS-XE Software 3.16.4eS
Cisco IOS and Cisco IOS-XE Software 3.16.5aS
Cisco IOS and Cisco IOS-XE Software 3.17.0S
Cisco IOS and Cisco IOS-XE Software 3.17.1S
Cisco IOS and Cisco IOS-XE Software 3.17.2S
Cisco IOS and Cisco IOS-XE Software 3.17.1aS
Cisco IOS and Cisco IOS-XE Software 3.17.3S
Cisco IOS and Cisco IOS-XE Software 3.17.4S
Cisco IOS and Cisco IOS-XE Software 3.2.0JA
Cisco IOS and Cisco IOS-XE Software 16.2.1
Cisco IOS and Cisco IOS-XE Software 16.2.2
Cisco IOS and Cisco IOS-XE Software 16.3.1
Cisco IOS and Cisco IOS-XE Software 16.3.2
Cisco IOS and Cisco IOS-XE Software 16.3.3
Cisco IOS and Cisco IOS-XE Software 16.3.1a
Cisco IOS and Cisco IOS-XE Software 16.3.4
Cisco IOS and Cisco IOS-XE Software 16.4.1
Cisco IOS and Cisco IOS-XE Software 16.4.2
Cisco IOS and Cisco IOS-XE Software 16.4.3
Cisco IOS and Cisco IOS-XE Software 16.5.1
Cisco IOS and Cisco IOS-XE Software 16.5.1a
Cisco IOS and Cisco IOS-XE Software 16.5.1b
Cisco IOS and Cisco IOS-XE Software 3.18.0aS
Cisco IOS and Cisco IOS-XE Software 3.18.0S
Cisco IOS and Cisco IOS-XE Software 3.18.1S
Cisco IOS and Cisco IOS-XE Software 3.18.2S
Cisco IOS and Cisco IOS-XE Software 3.18.3S
Cisco IOS and Cisco IOS-XE Software 3.18.4S
Cisco IOS and Cisco IOS-XE Software 3.18.0SP
Cisco IOS and Cisco IOS-XE Software 3.18.1SP
Cisco IOS and Cisco IOS-XE Software 3.18.1aSP
Cisco IOS and Cisco IOS-XE Software 3.18.1gSP
Cisco IOS and Cisco IOS-XE Software 3.18.1bSP
Cisco IOS and Cisco IOS-XE Software 3.18.1cSP
Cisco IOS and Cisco IOS-XE Software 3.18.2SP
Cisco IOS and Cisco IOS-XE Software 3.18.1hSP
Cisco IOS and Cisco IOS-XE Software 3.18.2aSP
Cisco IOS and Cisco IOS-XE Software 3.18.1iSP
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • cisco

Products

  • ios 15.1(2)sg8a,
  • ios 15.1(3)svg3d,
  • ios 15.1(3)svi1b,
  • ios 15.1(3)svk4b,
  • ios 15.1(3)svk4c,
  • ios 15.1(3)svm3,
  • ios 15.1(3)svn2,
  • ios 15.1(3)svo1,
  • ios 15.1(3)svo2,
  • ios 15.1(3)svo3,
  • ios 15.1(3)svo4,
  • ios 15.1(3)svp1,
  • ios 15.1(3)svp2,
  • ios 15.1(4)m12c,
  • ios 15.2(3)ea1,
  • ios 15.2(4a)ea5,
  • ios 15.3(3)ja1n,
  • ios 15.3(3)jd,
  • ios 15.3(3)jd11,
  • ios 15.3(3)jd12,
  • ios 15.3(3)jd13,
  • ios 15.3(3)jd14,
  • ios 15.3(3)jd2,
  • ios 15.3(3)jd3,
  • ios 15.3(3)jd4,
  • ios 15.3(3)jd5,
  • ios 15.3(3)jd6,
  • ios 15.3(3)jd7,
  • ios 15.3(3)jd8,
  • ios 15.3(3)jd9,
  • ios 15.3(3)je,
  • ios 15.3(3)jf,
  • ios 15.3(3)jf1,
  • ios 15.3(3)jf2,
  • ios 15.3(3)jf35,
  • ios 15.3(3)jf4,
  • ios 15.3(3)jf5,
  • ios 15.3(3)jg,
  • ios 15.3(3)jg1,
  • ios 15.3(3)jh,
  • ios 15.3(3)ji,
  • ios 15.3(3)ji2,
  • ios 15.3(3)jnp,
  • ios 15.3(3)jnp1,
  • ios 15.3(3)jnp3,
  • ios 15.3(3)jpb,
  • ios 15.3(3)jpb1,
  • ios 15.3(3)jpc,
  • ios 15.3(3)jpc1,
  • ios 15.3(3)jpc2,
  • ios 15.3(3)jpc3,
  • ios 15.3(3)jpc5,
  • ios 15.3(3)jpd,
  • ios 15.5(3)m,
  • ios 15.5(3)m0a,
  • ios 15.5(3)m1,
  • ios 15.5(3)m2,
  • ios 15.5(3)m2a,
  • ios 15.5(3)m3,
  • ios 15.5(3)m4,
  • ios 15.5(3)m4a,
  • ios 15.5(3)m4b,
  • ios 15.5(3)m4c,
  • ios 15.5(3)m5,
  • ios 15.5(3)m5a,
  • ios 15.5(3)s,
  • ios 15.5(3)s0a,
  • ios 15.5(3)s1,
  • ios 15.5(3)s1a,
  • ios 15.5(3)s2,
  • ios 15.5(3)s3,
  • ios 15.5(3)s4,
  • ios 15.5(3)s5,
  • ios 15.5(3)sn,
  • ios 15.5(3)sn0a,
  • ios 15.6(1)s,
  • ios 15.6(1)s1,
  • ios 15.6(1)s2,
  • ios 15.6(1)s3,
  • ios 15.6(1)s4,
  • ios 15.6(1)sn,
  • ios 15.6(1)sn1,
  • ios 15.6(1)sn2,
  • ios 15.6(1)sn3,
  • ios 15.6(1)t,
  • ios 15.6(1)t0a,
  • ios 15.6(1)t1,
  • ios 15.6(1)t2,
  • ios 15.6(2)s,
  • ios 15.6(2)s1,
  • ios 15.6(2)s2,
  • ios 15.6(2)s3,
  • ios 15.6(2)s4,
  • ios 15.6(2)sn,
  • ios 15.6(2)sp3b,
  • ios 15.6(2)t,
  • ios 15.6(2)t0a,
  • ios 15.6(2)t1,
  • ios 15.6(2)t2,
  • ios 15.6(3)m,
  • ios 15.6(3)m0a,
  • ios 15.6(3)m1,
  • ios 15.6(3)m1a,
  • ios 15.6(3)m1b,
  • ios 15.6(3)sn,
  • ios 15.6(4)sn,
  • ios 15.6(5)sn,
  • ios 15.6(6)sn,
  • ios 15.6(7)sn,
  • ios xe 16.2.1,
  • ios xe 16.2.2,
  • ios xe 16.3.1,
  • ios xe 16.3.1a,
  • ios xe 16.3.2,
  • ios xe 16.3.3,
  • ios xe 16.3.4,
  • ios xe 16.4.1,
  • ios xe 16.4.2,
  • ios xe 16.4.3,
  • ios xe 16.5.1,
  • ios xe 16.5.1a,
  • ios xe 16.5.1b,
  • ios xe 3.16.0as,
  • ios xe 3.16.0bs,
  • ios xe 3.16.0cs,
  • ios xe 3.16.0s,
  • ios xe 3.16.1as,
  • ios xe 3.16.1s,
  • ios xe 3.16.2as,
  • ios xe 3.16.2bs,
  • ios xe 3.16.2s,
  • ios xe 3.16.3as,
  • ios xe 3.16.3s,
  • ios xe 3.16.4as,
  • ios xe 3.16.4bs,
  • ios xe 3.16.4cs,
  • ios xe 3.16.4ds,
  • ios xe 3.16.4es,
  • ios xe 3.16.4gs,
  • ios xe 3.16.4s,
  • ios xe 3.16.5as,
  • ios xe 3.16.5s,
  • ios xe 3.17.0s,
  • ios xe 3.17.1as,
  • ios xe 3.17.1s,
  • ios xe 3.17.3s,
  • ios xe 3.17.4s,
  • ios xe 3.18.0as,
  • ios xe 3.18.0s,
  • ios xe 3.18.0sp,
  • ios xe 3.18.1asp,
  • ios xe 3.18.1bsp,
  • ios xe 3.18.1csp,
  • ios xe 3.18.1gsp,
  • ios xe 3.18.1hsp,
  • ios xe 3.18.1isp,
  • ios xe 3.18.1s,
  • ios xe 3.18.1sp,
  • ios xe 3.18.2asp,
  • ios xe 3.18.2s,
  • ios xe 3.18.2sp,
  • ios xe 3.18.3s,
  • ios xe 3.18.4s,
  • ios xe 3.2.0ja

Additional Info

Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Technical Analysis